500万彩票

如何保障滾筒冷渣器的正常運行

2019.2.18

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灰渣溫度越低熱量回收越困難的原因是因為按傳熱學原理,廢熱回收需要有一定的溫壓。溫度越低灰渣的導熱系數越小,灰渣冷卻過程的溫壓取決于灰渣溫度與環境溫度之差。當灰渣流表層冷卻后,灰渣攜帶的熱量難以通過導熱傳遞出來。
灰渣處理量需要與排渣溫度一并考慮的原因一般而言,當滾筒轉速提高后,灰渣前進速度變快,灰渣處理量增加,但排渣溫度提高,降低了熱量回收比例。滾筒轉速降低后,灰渣停留時間延長,出現更多的傳熱機會,總傳熱量增加。因此,滾筒冷渣器的灰渣處理量和排渣溫度是不可分離的一對變量,只有兩者一起考察才能進行滾簡冷渣器的性能比較。

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